20774445 has 8 divisors (see below), whose sum is σ = 33239136. Its totient is φ = 11079696.

The previous prime is 20774443. The next prime is 20774449. The reversal of 20774445 is 54447702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20774445 - 2¹ = 20774443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692467 + ... + 692496.

It is an arithmetic number, because the mean of its divisors is an integer number (4154892).

Almost surely, 2^20774445 is an apocalyptic number.

It is an amenable number.

20774445 is a deficient number, since it is larger than the sum of its proper divisors (12464691).

20774445 is a wasteful number, since it uses less digits than its factorization.

20774445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384971.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 20774445 is about 4557.8991871256. The cubic root of 20774445 is about 274.9010994220.

The spelling of 20774445 in words is "twenty million, seven hundred seventy-four thousand, four hundred forty-five".